@Anonymous wrote:
i used autocad 2014, after i upgrade my window 8.1 to window 10, my autocad can't open! please someone help me :(((
Based on the posts I have read in the forum, you may be no luck until Autodesk releases a update/fix.
In other words, you may have to wait or roll-back to Win8.1
BTW I am with v2014 on Win7.
HTH
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A circle is the locus of a cursor, starting and ending at the same point on a plane in model space or in layout such that its distance from a given coordinates (X,Y) is always constant.
X² + Y² = C²